High-performance medium & high voltage induction systems designed to optimize energy efficiency and operations safety across global manufacturing segments.
Medium and high-voltage (HV) electric motors serve as the vital core of heavy industries globally. Designed to operate at voltages ranging from 2.3 kV up to 13.8 kV and beyond, these heavy-duty systems deliver reliable high power output while drastically reducing current draw. This feature minimizes wiring thickness, avoids excessive thermal losses, and optimizes overall grid capacity. In demanding industrial facilities—such as modern petrochemical refineries, water treatment stations, mining operations, and large scale steel mill installations—choosing the correct high-voltage motor guarantees uninterrupted operational continuity and compliance with strict safety directives.
Shaanxi Nanfang Motor Technology Co., Ltd stands as a premier engineering and distribution gateway for Wolong Electric Drive Group Co., Ltd (SH600580), delivering certified energy efficient solutions. Backed by three world-class manufacturing bases, 39 strategic factories, and 3 global research institutes, we bridge advanced technology with custom applications to supply motors that surpass standard operational parameters.
Strategic integration of global manufacturing assets and over a century of combined electric motor design heritage.
Shaanxi Nanfang Motor Technology Co., Ltd acts as the authorized representative and key global supplier channel of Wolong Electric Drive Group Co., Ltd. Established in 1984 and listed publicly on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has advanced to become a global leader in motor design and drive technologies. Operating through a robust global network of 39 production plants and state-of-the-art research hubs across China, Europe, Japan, and the Americas, Wolong integrates advanced engineering capabilities to serve critical industries.
Through systematic strategic acquisitions of historic and technologically dominant motor manufacturers, Wolong has consolidated a vast portfolio of premium motor brands:
Acquired in 2011 (97.94% shareholding), ATB stands as one of Europe's top three motor manufacturers. Known for exceptional customized engineering across Austria and Germany, it includes industry-leading sub-brands Morley and Laurence Scott.
With over a century of industrial design history, Brook Crompton leads in high-efficiency motor engineering. Their specialized "W" and "10" series set international standards for low, medium, and high-voltage applications in hazardous conditions.
Founded in Germany in 1882, Schorch specializes in heavy duty drives for high-capacity applications in petrochemical processing, heavy metal machining, water purification plants, marine structures, and complex tunnel ventilation systems.
Integrated into Wolong in 2015, CNE is China's largest engineering base for explosion proof motors. It provides highly reliable, safety certified drive systems for coal mining, military operations, nuclear power plants, and oil refineries.
Acquired in 2018, GE's commercial and industrial motor division strengthens Wolong's product portfolio. This integration provides extensive engineering support for heavy processing plants across North America and global markets.
Morley brings a 130-year legacy of designing underground mining electric motors. Laurence Scott is renowned for low starting current systems used in nuclear generation and naval applications, earning the Queen's Award for outstanding performance.
How our specialized manufacturing facility network delivers cost-effectiveness, advanced engineering quality, and rapid custom design development.
Our industrial facilities utilize local sourcing for high grade cold rolled silicon steel sheets and premium high purity copper conductors. This close supply chain integration reduces production lead times and insulates clients from global raw material price fluctuations.
By using fully automated Vacuum Pressure Impregnation (VPI) equipment, we achieve void-free epoxy resin penetration in stator coils. This process provides excellent moisture resistance, high dielectric strength, and reliable thermal dissipation, ensuring long-term operational durability.
Each motor undergoes full-load testing before shipment. We perform dynamic balancing, high-potential dielectric testing, shaft vibration spectral analysis, and noise testing to confirm the motor meets project specifications.
An in-depth look at the construction, materials, and engineering of our heavy duty high-voltage induction motors.
The rotor features a rugged squirrel-cage configuration. Cast aluminum rotors are produced using centrifugal casting or advanced die-casting methods, integrating the rotor bars and end rings into a solid, durable component. This robust assembly ensures long term mechanical reliability and excellent start up torque performance.
For high-capacity heavy-duty applications, we construct rotors with solid copper bars, which are secured with custom end ring welding procedures. High-speed models also feature heavy duty alloy retaining rings to prevent component deformation from centrifugal forces during acceleration.
Our stator coils are constructed from premium polyester-film insulated copper wires, wrapped in glass-cloth backed mica tape. After precision winding, the complete stator core undergoes a computerized Vacuum Pressure Impregnation (VPI) process with solventless epoxy resin.
This process creates a highly rigid stator winding with excellent dielectric properties, mechanical strength, moisture resistance, and thermal durability (certified to Class F or Class H standards). This design allows the motors to operate reliably under frequent starting thermal stress.
The motor housing is designed using multi-physics simulation software to optimize structural rigidity and thermal performance. Built from high-tensile cast iron or fabricated structural steel, the frame has substantial structural margins to withstand heavy mechanical shocks.
The design places natural vibration frequencies far from operational speeds to minimize resonance. Deep cooling fins and optimized internal airflow channels enhance heat transfer, maintaining low temperature rises under full load.
The aerodynamic fan shroud consists of a steel main cover, integrated air deflector, safety screen, and internal sound-dampening plates. This configuration optimizes airflow while reducing noise from turbulence.
The side air inlets optimize airflow around structural obstructions behind the motor, preventing recirculation hot spots. The assembly is rated IP22, keeping operators safe while protecting the cooling components.
Approved for hazardous operations and industrial power grids worldwide.
Nemko / ATEX
CSA Canada
CE Europe
CCC China
SABS South Africa
TESTSAFE
Our commitment to quality allows us to serve diverse global markets through compliance with major international standards:
Advanced high-voltage motor configurations tailored to the challenges of specific industrial sectors.
We supply explosion proof and non-sparking motors (such as the YWKK/YWKS series) designed for refinery pumping stations and gas compressors. These units feature certified flameproof enclosures to prevent ignition in Zone 1 and Zone 2 hazardous areas.
Our heavy-duty, water-cooled flameproof motors are built to withstand coal dust and damp underground conditions. These motors deliver the high torque required for continuous miners, crushers, and conveyor belts.
Designed for ships and port cranes, our DNV-certified marine motors feature specialized paint finishes, high-grade anti-condensation heaters, and salt spray resistant coatings to handle offshore environments.
The Wolong Nanyang YBU/YBUS/YBUD series is built for TBM cutters, providing the high breakdown torque and vibration resistance needed to drive shield plates through rock formations.
For municipal water distribution and treatment, our vertical induction motors are paired with variable frequency drives (VFDs) to adjust flow rates efficiently, reducing mechanical wear and energy use.
Our distributed synchronous condenser solutions stabilize transmission networks by providing reactive power compensation, which helps regulate voltages for grids integrating volatile renewable energy sources.
How we help procurement teams navigate changing efficiency mandates and technical standards.
Industrial operations increasingly focus on reducing emissions and meeting minimum energy performance standards (MEPS). Global efficiency standards are shifting from IE3 toward IE4 and ultra-efficient IE5 requirements. Our engineering teams integrate permanent magnet auxiliary designs to help client facilities meet their carbon reduction goals.
Modern plant managers require real-time tracking of motor health. We integrate vibration, temperature, and current sensors directly into the motor frames. By monitoring this data, maintenance teams can identify potential bearing wear or stator faults early, helping prevent unplanned downtime.
Industrial applications often require customized shafts, modified mounting flanges, or specific terminal boxes to fit existing site layouts. Shaanxi Nanfang Motor works directly with plant engineers to customize designs, ensuring new motors fit seamlessly into older installations during retrofits.
Direct technical answers to common questions about selecting, installing, and maintaining high-voltage motors.
Engineered to meet specific regulatory standards, mechanical configurations, and environmental protection ratings.
NANFANG
